Excellent DIY - helped me no end...
I will add:
1,Those cars with headlight washers have an extra pump this has a very much larger filter.
2,Best to remove the white washer water holder COMPLETELY and rinse it out due to the sediment in the bottom of the container, this also ensures you can refit the pump(s) easily before reinstalling.
3, Ensure pumps are flushed with clean water
4, Torx 20 for plastic screw under sill
5, two hidden 8mm bolts in recess next to air con radiator .. note they will be
covered in crud.
6, Very carefully note how the liners fit together.. it will help refitting them.
Total DIY time: 65mins
From a weak dribble to very strong jets...like new ... !!!!
I had what looked like Jelly/Jello on the filters.
Always use a good quality screenwash .. and STICK with that brand i think the mixing causes the sludge.